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/* $Id$ */
#ifndef WAYPOINT_H
#define WAYPOINT_H
#include "pool.h"
#include "rail_map.h"
struct Waypoint {
TileIndex xy; ///< Tile of waypoint
StationID index; ///< Index of waypoint
TownID town_index; ///< Town associated with the waypoint
byte town_cn; ///< The Nth waypoint for this town (consecutive number)
StringID string; ///< If this is zero (i.e. no custom name), town + town_cn is used for naming
ViewportSign sign; ///< Dimensions of sign (not saved)
Date build_date; ///< Date of construction
byte stat_id; ///< ID of waypoint within the waypoint class (not saved)
uint32 grfid; ///< ID of GRF file
byte localidx; ///< Index of station within GRF file
byte deleted; ///< Delete counter. If greater than 0 then it is decremented until it reaches 0; the waypoint is then is deleted.
};
extern MemoryPool _waypoint_pool;
/**
* Get the pointer to the waypoint with index 'index'
*/
static inline Waypoint *GetWaypoint(uint index)
{
return (Waypoint*)GetItemFromPool(&_waypoint_pool, index);
}
/**
* Get the current size of the WaypointPool
*/
static inline uint16 GetWaypointPoolSize(void)
{
return _waypoint_pool.total_items;
}
static inline bool IsWaypointIndex(uint index)
{
return index < GetWaypointPoolSize();
}
/**
* Check if a Waypoint really exists.
*/
static inline bool IsValidWaypoint(const Waypoint *wp)
{
return wp->xy != 0;
}
#define FOR_ALL_WAYPOINTS_FROM(wp, start) for (wp = GetWaypoint(start); wp != NULL; wp = (wp->index + 1 < GetWaypointPoolSize()) ? GetWaypoint(wp->index + 1) : NULL) if (IsValidWaypoint(wp))
#define FOR_ALL_WAYPOINTS(wp) FOR_ALL_WAYPOINTS_FROM(wp, 0)
/**
* Fetch a waypoint by tile
* @param tile Tile of waypoint
* @return Waypoint
*/
static inline Waypoint *GetWaypointByTile(TileIndex tile)
{
assert(IsTileType(tile, MP_RAILWAY) && IsRailWaypoint(tile));
return GetWaypoint(_m[tile].m2);
}
int32 RemoveTrainWaypoint(TileIndex tile, uint32 flags, bool justremove);
Station *ComposeWaypointStation(TileIndex tile);
void ShowRenameWaypointWindow(const Waypoint *cp);
void DrawWaypointSprite(int x, int y, int image, RailType railtype);
void FixOldWaypoints(void);
void UpdateAllWaypointSigns(void);
void UpdateAllWaypointCustomGraphics(void);
#endif /* WAYPOINT_H */
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